Before you think that I am just a sore loser read this. In other states the casinos are required by law to "wash" all 6 decks together prior to shuffling. This in effect creates a random outcome. At Choctaw and probably Winstar they "wash" 1 deck at a time then shuffle them together. This creates a situation where the small cards stay together. Think about it. Have you been wondering why you lose at blackjack there?